Corkscrew



FIG. 1 is a front perspective view of a corkscrew, according to my new design;

FIG. 2 is a front perspective view thereof, shown in an alternate position of use;

FIG. 3 is a front elevation view thereof, shown in the same position of use as in FIG. 1;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines depict environmental subject matter only and form no part of the claimed design. 

The ornamental design for a corkscrew, as illustrated and described herein. 